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X-Ray Absorption Study of the High-Spin/Low-Spin Transition in [Fe(II)(bpp)2](BF4)2

Autor: R. Lübbers, H. A. Goodwin, G. Nowitzke, Gerhard Wortmann

Publikováno v: Le Journal de Physique IV. 7:C2-651

We employed both the Fe-K XANES and EXAFS to study the HS/LS transition in [Fe(bpp) 2 ](BF 4 ) 2 .

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54481b614ac9de8ce2dc567826df26da
https://doi.org/10.1051/jp4/1997132

Pressure and temperature dependence of the Eu valence in EuNi2Ge2 and related systems studied by Mössbauer effect, X-ray absorption and X-ray diffraction

Autor: H. J. Hesse, R. Lübbers, M. Winzenick, H. W. Neuling, Gerhard Wortmann

Publikováno v: Journal of Alloys and Compounds. 246:220-231

The effect of pressure and temperature on the valence state of Eu in EuNi 2 Ge 2 systems and the related systems EuNi 2 Si 2 , EuNi 2 Si 0.5 Ge 1.5 and EuPl 2 Ge 2 was studied by 151 Eu-Mossbauer spectroscopy, EuL III X-ray absorption and X-ray di

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4c8ec15611ebf095cf939eea7ce41054
https://doi.org/10.1016/s0925-8388(96)02467-x

Phonon density of states of iron up to 153 gigapascals

Autor: Geoffrey D. Price, H. Giefers, Markus Schwoerer-Böhning, Guoyin Shen, Gerhard Wortmann, Daniel Häusermann, Lidunka Vočadlo, Wolfgang Sturhahn, Ho-kwang Mao, R. Lübbers, Peter J. Eng, Dario Alfè, R. J. Hemley, Jian Xu, Michael J. Gillan, Michael Y. Hu, Viktor V. Struzhkin, Jinfu Shu, E. Ercan Alp

Publikováno v: ResearcherID

We report phonon densities of states (DOS) of iron measured by nuclear resonant inelastic x-ray scattering to 153 gigapascals and calculated from ab initio theory. Qualitatively, they are in agreement, but the theory predicts density at higher energi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95abd7c2dd46425126caba9a2a303ef1
https://pubmed.ncbi.nlm.nih.gov/11340201

Temperature and Pressure Induced Valence Transitions in YbCu5-xGax Studied by Yb-LIII XANES

Autor: J. Dumschat, R. Lübbers, O. Wortmann, Ernst Bauer

Publikováno v: Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1997, 7 (C2), pp.C2-1021-C2-1022. ⟨10.1051/jp4:19972125⟩
Scopus-Elsevier

Employing the Yb-L III XANES, YbCu 5 , YbCu 4 Ga, YbCu 3 Ga 2 and YbCu 3.5 Ga 1.5 were studied in the temperature range 25 K to 300 K. YbCu 5 and YbCu 4 Ga were studied at 300 K at pressures up to 175 kbar.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d036f9941de218a96949c467c2e2464c
https://hal.archives-ouvertes.fr/jpa-00255184/document